%0 Journal Article %T OPTIMIZATION OF CONCRETE COMPOSITIONS FOR SPRAYED CONCRETE IN THE CONSRUCTION OF UNDERGROUND STRUCTURES %A Alekseev, V.A. %A Bazhenova, S.I. %K underground structures, underground construction, sprayed concrete, shotcrete, composite binder, microfill, optimization of particle size distribution, fiber %J Bulletin of Belgorod State Technological University named after. V. G. Shukhov %D 2020 %N 5 %P 9 %I Belgorod State Technological University named after V.G. Shukhov